Video: How Nikon tests its D850 DSLR against the elements

Obviously you are trying very hard to talk like pro. I can understand that. In this case even the crappy Nikon is not suitable for you since you not good in either photos or video.

Your trying to reason with a child Gonos...

Anyway is not just the camera but lens also have to be wr. And under the direct midday summer sun exposure during a long time camera and lens could reach very high temps, i would try to avoid such conditions if possible.

And as for the meaning of what the steel is designed to do, In a camera I would think that the metal chassis would hint at it being there holding components in place, things like lens alignment, AF sensor alignment and sensor alignment.
My last interpretation would be that we would need a leaf spring in a camera body

The ring mount is attached directly to the internal plastic mirror box and not to the camera body
https://c1.staticflickr.com/1/902/42269036951_f0794fb96b_o.jpg
As you can see from this photo with the ring attached to the mirror box you can see that that's the only contact with anything else other than the MB

https://c2.staticflickr.com/2/1835/43384744694_a6a1d1bc1a_o.jpg

The material to what the lens mount is not that important to me, how ever their are a great deal of pentaxians out there that feel that pentax using the term steel chassis insures that the internal components are all metal.

But the true is that the bridge between the lens mount and the rest of the body is plastic just like what is found in most cameras found in that price bracket.
If you don't believe that the lens mount is attached to the mirror box you can take a look at any of the camera models that have been cut in half and you will see that the metal screw go directly into the plastic mirror box.

OMG, Ian, that explains all the lenses that fell of of the cameras regularly! Or, they don't? And the choice of material is well thought through as a part of a full rigid body construction, considering factors as dampening, rigidity and also breaking points, if something happens. Sounds a lot like FUD what you started to spread lately here, unfortunately...

Not FUD but explaining how different price bracket bodies are built differently.
Take the 645d and the 645z as you go up in price bracket cameras are built differently as the both the 645 camera are built with full metal subframe. Any guess as to why pentax would such a thing.
The very same with the D850 a body that is in a higher price bracket are built with different expectations.
I bet you if you weight both the bottom and back plate ( that are metal) in the D7000 and the D7100 cameras that they would be very close to the same weight as the steel chassis found in the K series cameras.
But somehow the pentax is built to a stronger standard than the ones found the Nikon camera, Like I said some people sure fall for marketing ;)

My question to you is if the pentax using the same plastic mirror box as found in the D7000 and D7100 are they anymore resistant to fail than the ones found in Nikon camera? and how does a steel chassis make it any stronger?

Why would pentax ever choose to use a full metal mirror box in a higher price bracket camera like the 645D/Z if there is no reason to do so?

My main point is that the D850 is built with a different price bracket in mind, just like the 645D/Z is built to a different price point of the K1 series cameras.
There is no FUD about it unless you are saying that pentax deciding to use a full metal chassis as FUD also .Is pentax's decision also FUD?

What I find as FUD is that my fellow pentaxians love to use the term metal chassis without knowing where this chassis is located and what it is doing. And when told that the lens mount it attached to a plastic mirror box they say its not soo and point to a marketing image. This image in no ways shows a metal mirror box. They would argue to the death if someone didn't not show them an image of a plastic mirror, Just the same as it has played out here and other places.
Ian " plastic mirror box"
Polacofede" Plastic mirror box?
then shows us a great marketing image of what appears as a full metal chassis.
People will then argue that no pentax uses a full metal chassis, I then go about showing a PLASITC MIRROR BOX then the argument then changes about how I a spreading FUD. The true FUD is that you seem to think that the K1 is built with a metal chassis just like the one in the D850 when in fact it is not ;) So please tell me what is FUD

Ian, if you want to show that someone might be wrong on the "internet" - welcome, here we are in 2018 digital media.
If you have the feeling that you need to argue against a group, that's your own classification and attribution and you seem to have the feeling that you need to oppose that? Well, whatever suits you.

But for me the question is, wheter this construction is more or less rigid than another one, and you also seem to imply that it is less. It's spreding fear that it is less rigid, at least uncertainty and implying disappointment, by stressing this point (over multiple posts)...
I am not aware that any significant problems ocuured due to this construction and, on the other hand, most likely there is some reasoning behind this choice, which might have to do with the construction of the new mirror box enabling the swinging mirror technique, maybe due to resonance and decoupling of elements in such a body, I don't know.

But if it's about you being right, no more questions.

Actually its about you and other that like to use the term FUD when and how I described how pentax has chosen to build the camera and market the steel chassis.
Let’s see what I have described
1 Pentax uses a plastic mirror box in all but the 645Z/D cameras
2 Pentax cameras use the same plastic mirror box as other camera manufactures use when cameras fall in the same price bracket as other manufactures product line.
3 The steel chassis does not transfer the load of the lens to the rest of the cameras body.
4 The front metal shell of the K7-K1 does not play a role in transferring any load to the steel chassis or support mirror box
5 Nikon with the D850 has chosen to use all metal chassis whereas pentax for the K1 has chosen a plastic and steel chassis
You might want to look up the meaning of FUD as nothing of what I have written is incorrect

Pointing out how the construction of the K1 differs to the D850 is not FUD no is not an insult to you, your religion and certainly not the camera you select to hold in your hand.
As seen before this is a classic response from a minority located in the pentax fanclub ;)
Now if I was to say that there was no difference to the construction of pentaxs limited lenses when compared to many of Nikons cheaper f1.8 lenses I can surely bet you that several pentaxians would bring the construction differences Nikon uses in their lens . The first thing that would come out of your mouth would be the word plastic vs metal

Funny now it is much more important the word metal is to the pentaxian vocabulary ;)

https://www.whatdigitalcamera.com/technology_guides/mirror-box-advanced-technology-guide-66329

Haha, Ian. If you want to play it that way, feel free.
I'm not a good strawman, and I certainly don't take any harm as my Nikon D810 seems sturdy enough, despite the polymer mirror box in it.

As some commented "A second design goal for the D810 was to produce less sensor vibration during exposure, to maximise use of the camera’s 36 megapixels. One measure taken was the fitting of a new lower-vibration shutter. The additional acoustic damping of the polymer mirror box will also have helped."

Anyhow, I still think that a ruggedness competition based on this fact is a preposterous attempt, even if it seems to be a pet issue for some.

Have a nice day.

@Polacofede
Yes I know that he D810 has a plastic mirror box and even more funny it was me who revealed to you the D810 uses a carbon reinforced chassis :)

See how this is news about the D850 what has this to do with the D850?

Never said the D810 had less of a sturdy mirror box but rather the D850 uses a metal mirror box

And just pointing out the false assumption that pentax marketing of a steel chassis gives the pentax camera a all steel subframe camera. nothing more.
That assumption that even played out here

There is also the assumption that pentax uses a reinforced carbon fibre polymer mirror box when in fact I have not seen anything to tell me otherwise.
I am sure if they did pentax would be the first to advertise the K1 as a camera with a steel chassis and carbon reinforced mirror box as that sounds even better.

"that pentax marketing of a steel chassis gives the pentax camera a all steel subframe camera. nothing more" no, i never thought the camera had an all metal steel subframe that included the mirror box. I just thought that the mount was attached to the steel frame, which you demonstrated is not.
The purpose of the article was only due to it showed to me that there are other things in play like accurate mount - mirror box alignment and that might influenced in the decision to attach the mount to the mirror box instead of the metal sub frame. In the end, i really don't care much as long as it works and if nikon, pentax, canon performs that kind of construction must be for a reason.

I guess they are aware just how much abuse the camera can handle beyond recommended parameters. If the camera comes in demonstrating damage they can be pretty confident in assuming it was used in a manner which exceeded both acceptable use guidelines and whatever margin they have tested to.

“No your camera did not melt because the air temp reached 41C. We know it tolerates 51C” (or whatever the number may be). “No there are not fish eggs on your mirror because of shoreline spray”. They are not going to condone use right up to the known failure point.

.......as well. It is also featured in the entry level Pentax offerings. However, with the Pentax, important functions such as AF...........
My 10 year old Nikon D300S is nicely weather sealed. It is not some Pentax exclusive, just their chosen point of marketing emphasis. Pentax does seem decidedly more up front on which lenses incorporate true weather sealing.

I don't think anyone claims this is unique. The video just shows what Nikon does to make rugged camera's. And sometimes it's just nice to see how things are made (and see faces behind product, like the Japanese guys in this video).

It’s a US thing, not sure what. It’s not like that in other countries.

@capeminiol Well, I think some of them are under the impression that I can only say negative things about Pentax. And I just want to save them the shock of finding out I can say something positive about them as well.

@starbase: :-O
Yes Pentax can make inexpensive and weathersealed (together). The K1 is a tank too. :)

@miles green Yeah but I don’t like higher-end Pentax gear in general. For the prices I paid for it I expected better AF.

That was an easy test, now add a 360 degrees jump in there and see if the D850 can handle that!

Sadly, you're right about that.

@ian, Pentax, plastic bodies? What alternate reality are you basing this poppycock on?

@ian k1, K1ii, K3, K3ii, K5 Series, K7 all full metal chassis (and weather sealing). The K50 and KP are built on a stainless frame but do have more polycarbonate parts relative to other Pentax models, as you would expect fro the price point.
Perhaps a visual example would help you:
https://www.pentaxforums.com/reviews/pentax-k-1-review/build-quality.html

The problem with pentax is that the only body without a plastic chassis is the D645 and 645z.

With the D850 it has full metal chassis while with the K5-K1mrk2 have just as much or even more plastic than metal under the outer skin